66819162 has 48 divisors (see below), whose sum is σ = 144473760. Its totient is φ = 20545056.

The previous prime is 66819157. The next prime is 66819169. The reversal of 66819162 is 26191866.

Its product of digits (31104) is a multiple of the sum of its prime divisors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 66819162.

It is not an unprimeable number, because it can be changed into a prime (66819169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210628 + ... + 210944.

It is an arithmetic number, because the mean of its divisors is an integer number (3009870).

Almost surely, 2^66819162 is an apocalyptic number.

66819162 is an abundant number, since it is smaller than the sum of its proper divisors (77654598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66819162 is a wasteful number, since it uses less digits than its factorization.

66819162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 384 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 66819162 is about 8174.2988690162. The cubic root of 66819162 is about 405.7890667433.

The spelling of 66819162 in words is "sixty-six million, eight hundred nineteen thousand, one hundred sixty-two".